Today’s pricey, high-tech gadget may be tomorrow’s has-been, little more than the seed for some cooler innovation to come. That was certainly the case with these once cutting-edge home appliances of the past. Take the percolator, for instance. Sure, it’s been supplanted by Mr. Coffee and Keurig, but it was a high-tech invention in its time. Take a tour through these 11 appliances that were considered state-of-the-art when they were introduced. While some are truly obsolete, you may find others reassuringly familiar.